Locking device



Jan. 5, 1954 N. o. HoLMs'rEN 2,664,737

LOCKING DEVICE Filed Dec. 22, 194e 2 shew-sheet 1 WTZW' INVENTOR \lllll /a i 4*? BY /o mm 4 /7 ORNEY y N. O. HOLMSTEN Jan. 5, 1954 LOCKING DEVICE Filed Dec. 22, 1949 Patented Jan. 5, 1954 UNITED STATES PATENT OFFICE LOCKING DEVICE Neil 0. Holmsten, New Rochelle, N. Y.

y Application December 22, 1949, Serial No. 134,575

(Cl. l- 211) 1 Claim.

This invention'relates to latches for French windows and the like and more particularly to a lock for such latches to prevent unauthorized operation thereof.

An object is to provide a lock which may be made unitary with the latch for installation therewith.

Another object is to provide a combined window latch and lock of novel and improved construction and which is compact and dependable in operation and is neat and pleasing in appearance.

Various other objects and advantages will be apparent from the following description taken in connection with the accompanying drawings in which certain specic embodiments have been set forth for purposes of illustration.

In the drawings:

Fig. 1 is a front elevation of a lock embodying the invention, shown attached to a window frame;

Fig. 2 is a central vertical section through the device shown in Fig. 1.

Fig. 3 is a section taken on the line 3--3 of Fig. 2

Fig. 4 is a rear elevation of the lock before attachment to the window frame;

Fig. 5 is a view similar to Fig. 4, but with the base plate removed;

Fig. 6 is a view similar to Fig. 5, but with the lock bolt removed;

Fig. 7 is a transverse section taken on the line '1 -'I of Fig. l;

Fig. 8 is a front elevation of a window latch illustrating another embodiment of the invention;

Fig. 9 is a central vertical section through the device shown in Fig. 8;

Fig. 10 is a section taken on the line Ill- I0 of Fig. 9; l

Fig. 11 is a fragmentary view similar to Fig. 10 with the lock bolt removed;

Fig. 12 is a transverse section taken on the line I2-I2 of Fig. 8; and

Fig. 13 is a longitudinal section through a latch illustrating another embodiment of the invention.

Referring to the drawings more in detail the window latch is shown in Figs. 1 to 7 as applied to a swinging French window having a sash I5 and panes I6 and closing against a frame comprising a Vertical bar I'I. The bar I'I carries a latch pivoted to a ange 2| on the bar II to swing outwardly and having a nger 22 extending through an opening '23 in the bar I'I and enf gaging the sash I5 to hold the same closed. The

latch 20 includes a handle 24 which pulls outwardly from the bar to release the sash. A shoulder 25 on the linger forms a stop to limit the downward movement of the handle 24.

The lock includes a housing 23 having a base plate with top and bottom flanges 3| and 32 attached to the bar I'I as by non-removable screws or rivets 33 and 34. The housing 30 carries a lock cylinder 35 of standard type to be actuated by a key, and rotatable when unlocked, in a barrel 36 which is xed to the housing 29. The lock cylinder 35 carries a crank arm 31 at the inner end. The arm 31 carries a pin 40 which extends through a slot 4I in a tongue 42 of a sliding lock bolt 43 which is mounted to slide in a chamber 44 in the h ousing 29 and carries a plunger 45 which is adapted to abut against a shoulder 46 on the handle 24 to prevent movement thereof. The pin 4E! extends into an arcuate slot 4'I in a base plate 3l) which extends over an arc oi about 180 and is designed to take the thrust of the pin 40 when in locking position. The slot 4l is of a size to closely fit the pin 40 in looking position, but is somewhat larger in other positions to permit free movement of the pin therein.

In the above-described lock the bolt 43 is freely slidable in the housing by rotation of the cylinder 35 effected by its key, but is locked against barrel 36 with the plunger 45 in advanced position against the shoulder 46 of the handle 24 when the key is removed. When in such locked position the pin 40 is supported in the arcuate slot 41 so that the thrust due to any force applied thereto by the handle 24 is taken directly by the back plate 38. Hence the lock is relieved of any strain due to attempts to release the latch.

Fig. 13 shows a pivoted stop 'Ill having an arm 'II projecting into a hole 'I2 in a sliding plate I3 which is actuated by a pin 'I4 eccentrically mounted on the cylinder of a lock 'I5 similar to that above described. In this form the stop is shifted into the path of the latch or retracted therefrom by the key operated lock 15.

In the embodiment of Figs. 8 to 12, the latch 50 is pivoted between flanges 5I of a housing 52 having end flanges 53 attached to the bar I'I as in Figs. 1 to '7. The housing 52 carries a lock barrel 54 in which a lock cylinder 55 rotates. The cylinder 55 carries a crank arm 5E having an eccentrically located pin 51 engaging a slot BI) in the ange 6I of a sliding lock bolt 62 which slides in a recess 63 in the housing 52. The bolt.

3 62 is adapted to engage beneath a shoulder 64 in the latch 50 when extended and to release said latch when retracted. The thrust of the shoulder 64 in this case is taken directly by the bar I1. Hence the locking effect is not dependent upon the strength of the lock cylinder.

In this embodiment the bolt 62 is shifted by rotating the lock cylinder 55 by the usual key, but is locked in advanced position as shown in Fig. 9 upon removal of the key.

While specific embodiments have been shown, the invention may be applied to various uses as will be apparent to a person skilled in the art.

What is :claimed is:

A locking device for a hinged easement window having a sash swinging outwardly and closing against a ixed frame, comprising a latch pivvoted on the inside of said iixed frame having a latching finger extending through said frame to engage and latch said sash, a handle carrying said linger swinging inwardly from said frame and having a shoulder movable toward said frame, a lock having a bolt sliding along said frame to engage said shoulder when extended to prevent actuation of said latch, said Ilock having a rotatable key actuated cylinder, a crank arm attached to said cylinder and a pin connecting said crank arm to actuate said bolt, said bolt sliding between said shoulder and said frame, said frame extending beneath said shoulder to take the thrust of the handle and prevent the possibility of shearing the bolt when the handle is forced toward latch releasing position.

NEIL Oi HOLMSTEN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,592,405 Worley, Jr. et al. July 13, 1926 1,627,081 Fisher May 3, 1927 11,652,660 Devereaux Dec. 13, 1927 2,249,438 Smith July 15, 1941 2,514,317 Eichacker July 4, 1950 2,574,244 Colonna Nov. 6, 1951 

